Clause

Extended Expiration / Run-off Clause

Expert-reviewed Updated: 2026-09-03 Expert-reviewed: 2026-09-04 (Guido Hesse, Hesse Group Holding AG) Version 0.1.0

The extended expiration or run-off clause ensures that losses arising from events occurring during the treaty period can still be settled under the treaty after its expiry.

Clause type
Termination
Origin/Market
Reinsurance market
Favours
Insured
Negotiability
Market standard

Purpose

Reinsurance treaties typically run for one year, yet losses from events occurring within that year are sometimes only finally settled months or years later. The run-off clause makes clear that such late-developing losses continue to be handled under the terms of the original treaty, even after it has expired or been replaced by a successor treaty.

Effect and limits

The clause applies only to losses from events occurring within the treaty period (“losses occurring” basis); it does not extend the period of cover itself, only the settlement window. Its significance is smaller under claims-made treaties, where the claim must already be notified during the period.

Negotiation and practice

Together with the sunset clause, a deadline is usually agreed after which late-developing losses are no longer accepted – the two clauses sit in tension between legal certainty for the reinsurer and full protection for the cedent.